Composite contact with more accurate and stable contact
By designing the limiting rod, limiting hole, and mating part, combined with threaded connection and limiting rib, the problem of poor contact of silver contacts under impact or vibration of the switch is solved, and the stability and conductivity of the contacts are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO YILI ELECTRONIC CO LTD
- Filing Date
- 2025-03-07
- Publication Date
- 2026-06-12
AI Technical Summary
In the prior art, during use, the silver contact head of the switch may become misaligned due to impact or vibration, resulting in poor circuit contact.
By using the design of the limiting rod, limiting hole, and contact arc surface between the mating part and the composite layer, combined with the threaded connection and limiting rib, the stability and conductivity of the contact are ensured.
This results in more stable contact, better impact resistance, avoidance of poor contact, and improved conductivity and stability of threaded connections.
Smart Images
Figure CN224355138U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of composite contacts, specifically to a composite contact that provides more accurate and stable contact. Background Technology
[0002] Contacts are common components in switches, serving as points of intersection that separate and make contact when the switch is open or closed.
[0003] Silver composite contacts are a type of contact where silver or a silver alloy is riveted to copper to enhance conductivity. In related technologies, silver contacts include a head and a shank attached to the head. When two silver contacts are in contact, the heads of the two contacts make contact with each other.
[0004] In the process of developing this application, the inventors discovered that the technology has at least the following problems: when the switch is subjected to impact or vibration during use, the contact surfaces of the two silver contacts are easily misaligned, resulting in poor circuit contact, which needs to be improved. Utility Model Content
[0005] To overcome the shortcomings of the prior art, this utility model provides a composite contact that offers more accurate and stable contact. The design of the limiting rod, limiting hole, and the contact arc surface between the mating part and the composite layer makes the contact between the two contacts more stable and accurate, with better impact resistance, thus avoiding poor contact.
[0006] Technical solution
[0007] A composite contact with more accurate and stable contact includes a substrate. The upper surface of the substrate has a threaded mounting hole with internal threads. A contact is threadedly connected inside the threaded mounting hole. The upper surface of the contact has a contact concave surface. A composite layer is disposed on the contact concave surface. A limiting hole is provided through the composite layer and the center of the contact. A non-conductive limiting rod can be inserted into the limiting hole. The upper end of the limiting rod is fixedly connected to a mating part for contacting the composite layer to achieve energization.
[0008] Furthermore, the convex surface of the mating part fits perfectly against the concave surface of the composite layer.
[0009] Furthermore, the outer surface of the contact point is provided with an external thread that can be threadedly connected to the threaded mounting hole.
[0010] Furthermore, a reinforcing space communicating with the threaded mounting hole is provided in the lower surface of the substrate, and a connecting end fixed to the contact point is provided in the reinforcing space.
[0011] Furthermore, the limiting hole extends into the interior of the connecting end.
[0012] Furthermore, the connection end is provided with an extended contact plate that can be detached from the substrate, and the extended contact plate is fixedly connected to the contact point.
[0013] Furthermore, a limiting rib is provided on the inner wall of the reinforced space, and the limiting rib abuts against a connecting plate located inside the reinforced space, with a bolt passing through the connecting plate.
[0014] Furthermore, a threaded hole is provided on the lower surface of the connecting end, and the bolt is threadedly connected to the threaded hole.
[0015] Beneficial effects
[0016] Compared with the prior art, this utility model has the following advantages: the design of the limiting rod, limiting hole, and the contact arc surface between the mating part and the composite layer makes the contact between the two contacts more stable and accurate, and has better impact resistance; at the same time, the contact arc surface between the mating part and the composite layer can increase the contact area between the two and improve the conductivity; the connection end is tensioned by the bolt, thereby ensuring that the threaded connection between the contact and the threaded mounting hole is more stable and less prone to accidental rotation. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of a composite contact that provides more accurate and stable contact according to this utility model.
[0018] Attached icon number
[0019] 1. Base body; 2. Connecting end; 3. Threaded hole; 4. Bolt; 5. Connecting plate; 6. Limiting rib; 7. Reinforced space; 8. Extended contact plate; 9. Contact point; 10. External thread; 11. Composite layer; 12. Mating part; 13. Limiting rod; 14. Contact concave surface; 15. Limiting hole; 16. Threaded mounting hole. Detailed Implementation
[0020] To better illustrate the content of this utility model, the following description is provided in conjunction with the accompanying drawings and embodiments:
[0021] have Figure 1 As shown, this utility model discloses a composite contact with more accurate and stable contact, including a base 1. The upper surface of the base 1 is provided with a threaded mounting hole 16 with internal threads. A contact 9 is threadedly connected inside the threaded mounting hole 16. A contact concave surface 14 is provided on the upper surface of the contact 9. A composite layer 11 is provided on the contact concave surface 14. A limiting hole 15 is provided through the center of the composite layer 11 and the contact 9. A non-conductive limiting rod 13 can be inserted into the limiting hole 15. A mating part 12 for contacting the composite layer 11 to achieve energization is fixedly connected to the upper end of the limiting rod 13.
[0022] Furthermore, the convex surface of the mating part 12 fits perfectly against the concave surface of the composite layer 11.
[0023] Furthermore, the outer surface of the contact 9 is provided with an external thread 10 that can be threadedly connected to the threaded mounting hole 16.
[0024] Furthermore, a reinforcing space 7 communicating with the threaded mounting hole 16 is provided in the lower surface of the substrate 1, and a connecting end 2 fixed to the contact point 9 is provided in the reinforcing space 7.
[0025] Furthermore, the limiting hole 15 extends into the interior of the connecting end 2.
[0026] Furthermore, the connecting end 2 is provided with an extended contact plate 8 that can be disengaged from the base 1, and the extended contact plate 8 is fixedly connected to the contact point 9.
[0027] Furthermore, a limiting rib 6 is provided on the inner wall of the reinforced space 7, and the limiting rib 6 abuts against a connecting plate 5 located inside the reinforced space 7, and a bolt 4 passes through the connecting plate 5.
[0028] Furthermore, a threaded hole 3 is provided in the lower surface of the connecting end 2, and the bolt 4 is threadedly connected to the threaded hole 3.
[0029] Specifically, during use, the contact 9 is screwed into the threaded mounting hole 16 from the underside of the base 1 until the extended contact plate 8 presses against the top wall of the reinforced space 7.
[0030] Then, the connecting plate 5 is placed inside the reinforced space 7, and the reinforced space 7 is threadedly connected to the connecting end 2 by the bolt 4, thereby putting the threaded connection of the contact 9 under tension, making the connection of the contact 9 more stable and preventing accidental rotation.
[0031] After installation, the limiting rod 13 is inserted into the limiting hole 15 to restrict the movement trajectory of the mating part 12, ensuring stable and accurate contact between the mating part 12 and the composite layer 11.
[0032] Meanwhile, the connecting arc surface between the mating part 12 and the composite layer 11 can not only ensure stable contact between the two, but also increase the contact area and improve conductivity.
[0033] The presence of the extended contact plate 8 can also improve the conductivity between the contact 9 and the substrate 1.
[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the technical solutions of this utility model have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of this utility model.
Claims
1. A composite contact with more accurate and stable contact, characterized in that: The device includes a substrate (1), on the upper surface of which is provided a threaded mounting hole (16) with internal threads. A contact (9) is threadedly connected inside the threaded mounting hole (16). A contact concave surface (14) is provided on the upper surface of the contact (9). A composite layer (11) is provided on the contact concave surface (14). A limiting hole (15) is provided through the center of the composite layer (11) and the contact (9). A non-conductive limiting rod (13) can be inserted into the limiting hole (15). A mating part (12) for contacting the composite layer (11) to achieve energization is fixedly connected to the upper end of the limiting rod (13).
2. The composite contact with more accurate and stable contact according to claim 1, characterized in that: The convex surface of the mating part (12) fits perfectly against the concave surface of the composite layer (11).
3. A composite contact with more accurate and stable contact according to claim 2, characterized in that: The outer surface of the contact (9) is provided with an external thread (10) that can be threadedly connected to the threaded mounting hole (16).
4. A composite contact with more accurate and stable contact according to claim 3, characterized in that: The lower surface of the substrate (1) is provided with a reinforcing space (7) that communicates with the threaded mounting hole (16), and a connecting end (2) fixed to the contact point (9) is provided in the reinforcing space (7).
5. A composite contact with more accurate and stable contact according to claim 4, characterized in that: The limiting hole (15) extends into the interior of the connecting end (2).
6. A composite contact with more accurate and stable contact according to claim 5, characterized in that: The connecting end (2) is provided with an extension contact plate (8) that can be disconnected from the base (1), and the extension contact plate (8) is fixedly connected to the contact point (9).
7. A composite contact with more accurate and stable contact according to claim 6, characterized in that: The inner wall of the reinforced space (7) is provided with a limiting rib (6), the limiting rib (6) abuts against a connecting plate (5) located inside the reinforced space (7), and a bolt (4) passes through the connecting plate (5).
8. A composite contact with more accurate and stable contact according to claim 7, characterized in that: The lower surface of the connecting end (2) is provided with a threaded hole (3), and the bolt (4) is threadedly connected to the threaded hole (3).